If A is a matrix whose columns are random variables and whose rows are observations, V is a row vector containing the variances corresponding to each column.
Unfortunately, that GPU is compute capability 1.2, and Parallel Computing Toolbox requires GPUs with compute capability 1.3 and above. (I'm not sure quite why you're getting such a cryptic error message though). There's a post over on the newsgroup explaining why 1.3 is required:
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